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| Web URL(s): | https://scisoc.confex.com/crops/2019am/meetingapp.cgi/Paper/122571
Last checked: 02/03/2020
Requires: JavaScript |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Jespersen, David;
Xiao, Bo |
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| Author Affiliation: | Jespersen: Crop and Soil Sciences, University of Georgia-Griffin, Griffin, GA; Xiao: College of Horticulture and Gardening, Yangtze University, Jingzhou, China |
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| Title: | Photosynthetic responses of warm-season turfgrasses to low-light conditions |
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| Section: | C05 turfgrass science
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| Meeting Info.: | San Antonio, Texas: November 10-13, 2019 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2019, p. 122571. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Chlorophyll content; Cynodon; Light intensity; Paspalum vaginatum; Photosynthesis; Plant physiology; Species evaluation; Stenotaphrum secundatum; Warm season turfgrasses; Zoysia
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| Abstract/Contents: | "Turfgrasses contribute valuable functional and aesthetic qualities to many landscapes. However, in many environments turfgrasses are grown in close proximity to other vegetation including trees, or structures which cause a shading of the turfgrass canopy. Low light levels are a common stress which reduces turfgrass performance and limits the ability to use turfgrasses in certain areas. Among commonly used turfgrass species a range of tolerance to reduced light in shaded conditions have been documented, with St. Augustine grass being considered one of the most tolerant warm-season turfgrass species, while bermudagrass is one of the most sensitive. Field trials have documented differences in between species and cultivars, however relatively little is understood about the underlying physiology responsible for differences in the ability to tolerate different levels of light. A controlled environment experiment was performed to better understand differences among common warm-season turfgrass species at 3 levels of light intensities; high light (800 μmol), moderate light (400 μmol) and low light (200 μmol) intensities. Four species were tested including bermudagrass (Cynodon spp.), seashore paspalum (Paspalum vaginatum), St. Augustine grass (Stenotaphrum secundatum), and zoysiagrass (Zoysia Japonica). Measurements included overall turfgrass performance and growth, as well as measurements to understand photosynthetic difference in light harvesting under different lighting conditions. Under low-light conditions zoysiagrass had higher chlorophyll content and increased light harvesting efficiency (YII) based on chlorophyll fluorescence compared to bermudagrass. Understanding photosynthetic responses will help better understand the underlying physiology responsible for differences in turfgrass performance under shaded conditions." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"418-5"
"492"
"Poster #1615" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jespersen, D., and B. Xiao. 2019. Photosynthetic responses of warm-season turfgrasses to low-light conditions. Agron. Abr. p. 122571. |
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| Web URL(s):
https://scisoc.confex.com/crops/2019am/meetingapp.cgi/Paper/122571
Last checked: 02/03/2020
Requires: JavaScript |
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